#include "iostream"
//
// Created by xiao on 2024/6/20.
//
int main() {
    //string
    char c1[4] = {'d', 'o', 'g', '\0'};
    //非string
    char c2[3]= {'d', 'o', 'g'};

    std::cout << c1 << std::endl;
    std::cout << c2 << std::endl;
}